Cleaning robot

ABSTRACT

A cleaning robot includes a housing including a cover, a base and a pair of lateral plates, a cleaning device and a driver. The cleaning device is mounted on the base to form a tilt angle with ground and includes a connecting member and a cleaning member connected to the connecting member. The cleaning member includes a water storage room mounted on the connecting member and a cleaning portion connected to the water storage room. The driver is mounted on the base and tightly fixed with the connecting member for driving the connecting member to rotate so that the cleaning member is following rotating with the connecting member. The cleaning portion can clean water marks or grease marks on the ground during the cleaning member rotation. Thus, users are not required to clean water marks or grease marks on the ground, thereby the convenience of users is improved.

BACKGROUND 1. Technical Field

The present disclosure generally relates to cleaning devices field, and especially relates to a cleaning robot.

2. Description of Related Art

It is a necessary trend of future development by using an automatic cleaning way to clean our indoor. As the population ages and people are getting busier and busier, a tedious and mechanical work of indoor cleaning can be replaced by machines to help improve people's quality of life. However, A conventional cleaning robot only can absorb dust and debris rather than can clean water marks or grease marks on a ground so that the ground still needs to be manually cleaned, thereby causing inconvenience to users.

SUMMARY

The technical problems to be solved: in view of the shortcomings of the related art, the present disclosure relates to a cleaning robot which can clean water marks or grease marks on ground to improve the convenience of users.

The technical solution adopted for solving technical problems of the present disclosure is:

a cleaning robot includes a housing including a cover, a base tightly connected to the cover, and a pair of lateral plates movably connected to the cover and the base, respectively. A cleaning device is mounted on a bottom surface of the base and formed a tilt angle with ground. The cleaning device includes at least one connecting member movably connected to the base, and at least one cleaning member connected to the connecting member. The cleaning member includes a water storage room installed with the connecting member and a cleaning portion mounted on the water storage room; and a driver mounted on an upper surface of the base and tightly fixed with the connecting member for driving the connecting member to rotate so as to the cleaning member follow rotating with the connecting member. Water in the water storage room can be immersed into a bottom of the cleaning portion to make the cleaning portion clean water marks or grease marks on the ground during the cleaning member rotation, and the pair of lateral plates can move relative to the base and transmit a signal to the driver which can drive the cleaning device to move for changing a movement direction of the cleaning robot when the pair of lateral plates is touched.

Wherein the tilt angle is between 3 degree and 30 degree.

Wherein the driver includes a gear-box member tightly fixed with the upper surface of the base, the gear-box member including a gear-box body tightly fixed with the cleaning device and formed the tilt angle with the ground to make the cleaning device form the tilt angle with the ground.

Wherein the connecting member includes a connecting body and a first installing body protruding towards the cleaning member from a middle of the connecting body, and the water storage room includes a water storage body caught on the connecting body for connecting the connecting member with the water storage room and a second installing body received in the first installing body.

Wherein the first installing body includes a first inserting portion and a first receiving portion received in a middle of the first installing body and surrounded by the first inserting portion, and the second installing body includes a second receiving portion and a second inserting portion positioned on a middle thereof and surrounded by the second receiving portion, the first inserting portion inserted into the second receiving portion and the second receiving portion received in the first receiving portion.

Wherein the connecting body includes a plurality of connecting portions each formed a barb at the end thereof for inserting into a receiving groove formed on outer periphery of the water storage body to catch on an inner wall of the receiving groove for preventing the connecting body from disconnecting from the water storage body.

Wherein the cleaning portion includes a cleaning body, a receiving room positioned on a middle portion of the cleaning body for receiving the water storage body therein to form a water storage tank therebetween, and a cleaning cloth positioned on a bottom of the cleaning body.

Wherein the receiving room includes a receiving recess formed at a first bottom wall thereof, a bottom of the outer periphery of the water storage body inserted into the receiving recess and tightly fixed with the first bottom wall of the receiving recess to tightly connect the water storage room with the cleaning portion.

Wherein the first bottom wall of the receiving room includes an outlet opening for receiving at least one water seepage portion of the cleaning member therein, and water in the water storage tank can penetrate the cleaning cloth through the water seepage portion so that the cleaning cloth can clean the ground.

Wherein the first bottom wall of the receiving room further includes at least one retaining wall formed on a sidewall of the receiving recess for preventing the water seepage portion from blocking the outer periphery of the water storage body to tightly fix with the receiving recess.

Wherein the cleaning robot further includes an inducting device electrically connected to the driver and including a plurality of first inducting members mounted on the upper surface of the base for sensing a movement of the lateral plate to change a movement direction of the cleaning robot.

Wherein each lateral plate includes a plurality of cutting elements for inserting into a corresponding separating slot of the first inducting member to cut off infrared, the first inducting member can sense a cutting signal and transmit the cutting signal to the driver so that the driver drives the cleaning robot change the movement direction according to the cutting signal.

Wherein the first inducting member includes an emitting diode and a reception diode, the separating slot positioned between the emitting diode and the reception diode.

Wherein the inducting device further includes a plurality of second inducting members mounted on the bottom surface of the base for sensing whether there is a step on the ground and transmitting a sensing signal to the driver for driving the cleaning robot change its movement direction when there is a step on the ground so as to prevent the cleaning robot from falling down.

The present disclosure provides the advantages as below.

The cleaning portion of the present disclosure can clean water marks or grease marks on ground during rotation of the cleaning member. Thus, users are not required to clean the water mark or grease marks on the ground, thereby the convenience of users is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded, schematic view of the cleaning robot in accordance with an exemplary embodiment.

FIG. 2 is a partial assembly schematic view of the cleaning robot of FIG. 1.

FIG. 3 is a schematic view of a cover of the cleaning robot of FIG. 1.

FIG. 4 is an assembly schematic view of a cleaning device of the cleaning robot of FIG. 1.

FIG. 5 is a schematic view of a cleaning member of the cleaning device of the cleaning robot of FIG. 4.

FIG. 6 is a schematic view of a cleaning portion of the cleaning member of the cleaning robot of FIG. 5.

FIG. 7 is a schematic view of a water storage room of the cleaning member of the cleaning robot of FIG. 5.

FIG. 8 is a schematic view of a connecting member of the cleaning device of the cleaning robot of FIG. 4.

FIG. 9 is similar to FIG. 2, but shown a cleaning cloth is removed from FIG. 2.

FIG. 10 is an enlarged schematic view of circle X of the cleaning robot of FIG. 1.

DETAILED DESCRIPTION

The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings, in which like reference numerals indicate similar elements.

Referring to FIG. 1, FIG. 2 and FIG. 4, a cleaning robot 100 according to an exemplary embodiment of the present disclosure is generally an oval-shaped configuration and includes an oval-shaped housing 10, a cleaning device 30 and a driver 50. The cleaning device 30 is movably connected to the housing 10, and the driver 50 is mounted on the housing 10 and connected to the cleaning device 30.

The housing 10 includes a cover 12, an oval-shaped base 14 and a pair of lateral plates 16. The pair of lateral plates 16 is movably connected to the cover 12 and the base 14, respectively, and surrounding around a corresponding long outside 101 of the cover 12 and the base 14. The cover 12 is tightly fixed with the base 14 and the driver 50 is mounted on a short side 102 of the base 14.

Referring to FIGS. 1-7, the cleaning device 30 is movably mounted on a bottom surface 144 of the base 14 and formed a tilt angle with ground. The cleaning device 30 includes at least one connecting member 32 movably connected to the base 14, and at least one cleaning member 34 connected to the connecting member 32. The cleaning member 34 includes a water storage room 35 installed with the connecting member 32 and a cleaning portion 37 mounted on the water storage room 35.

The driver 50 is mounted on an upper surface 142 of the base 14 and tightly fixed with the connecting member 32 for driving the connecting member 32 to rotate so as to the cleaning member 34 follow rotating with the connecting member 32. During the cleaning member 34 rotating, water in the water storage room 35 can be immersed into a bottom of the cleaning portion 37 to make the cleaning portion 37 clean water marks or grease marks on the ground.

Furthermore, when the pair of lateral plates 16 is touched, the pair of lateral plates 16 can move relative to the base 14 and transmit a signal to the driver 50 which can drive the cleaning device 30 to move for changing a movement direction of the cleaning robot 100.

In the present embodiment of the disclosure, there is a pair of connecting members 32 and a pair of cleaning members 34, and a pair of water storage rooms 35 and a pair of cleaning portions 37.

In other embodiments of the present disclosure, there can be one connecting member 32, one cleaning member 34, one water storage room 35 and one cleaning portion 37.

The cleaning robot 100 of the present disclosure is provided the cleaning member 34 which can clean water marks or grease marks on the ground while rotating the cleaning member 34. Therefore, in the cleaning process, users are not required to clean water marks or grease marks on the ground, which the convenience of users is improved.

Furthermore, the cleaning device 30 forms a tilt angle with the ground so that the cleaning portion 37 also forms the tilt angle with the ground, thereby the cleaning robot 100 can freely move on the ground. Specifically, the cleaning portion 37 forms a highest point and a lowest point with the ground, when the cleaning portion 37 is obliquely rotating, a high strength friction is created by the lowest point and the ground for driving the cleaning portion 37 to rotate to move forward and simultaneously clean the ground.

Furthermore, the pair of lateral plates 16 can move relative to the base 14 and transmit a signal to the driver 50 which can drive the cleaning device 30 to move for changing a movement direction of the cleaning robot 100 when the pair of lateral plates 16 is touched. Thus, during use, the cleaning robot 100 of the present disclosure can reach a various corners of the user's room, and the situation of a dead machine or a card machine cannot be easily avoided.

Furthermore, the tilt angle is between 3 degree and 30 degree so that the cleaning member 34 of the present disclosure can climb. During in the process of usage, if the ground is inclined, the cleaning member 34 with a sloping surface of the present disclosure is still able to craw on the inclined ground. Thus, the cleaning robot 100 of the present disclosure can also be used for an inclined ground, which both a use range and the convenience to use are improved.

In the present embodiment of the disclosure, the periphery of the base 14 is surrounded by the pair of lateral plates 16. In this way, during movement, as long as the cleaning robot 100 encounters an obstacle, the pair of lateral plates 16 can move relative to the base 14 and transmit a signal to the driver 50 which can drive the cleaning device 30 to move for changing the movement direction of the cleaning robot 100.

Referring to FIG. 1 and FIG. 3, in the present embodiment of the disclosure, the cover 12 includes a plurality of posts 120, and each lateral plate 16 includes a pair of installing recesses 160. The plurality of posts 120 is inserted into a corresponding installing recess 160 to slide in the installing recess 160 so that the lateral plate 16 can move relative to the cover 12. Specifically, there are four posts 120.

Referring to FIG. 1 and FIG. 4, in the present embodiment of the disclosure, there is a pair of drivers 50 symmetrically mounted on two opposite oval short sides 102. The driver 50 includes a gear-box member 52 and a PCB 54 electrically connected to the gear-box member 52 and mounted on a middle portion of the base 14. The gear-box member 52 is tightly fixed with the base 14 and includes a gear-box body 51 and a motor 53 connected to the gear-box body 51. The cleaning device 30 is tightly fixed with the gear-box body 51 so that the gear-box body 51 forms a tilt angle with the ground or a lower wall of the base 14, thereby the cleaning member 34 forms a same tilt angle with the ground. That is to say, the tilt angle between the cleaning member 34 of the present disclosure and the ground is determined by an installation position of the gear-box body 51. It is can be achieved the purpose of adjusting the tilt angle between the cleaning member 34 and the ground by only adjusting the tilt angle between the gear-box body 51 and the ground or the lower wall of the base 14, but rather than need to replace the cleaning member 34, thereby the manufacturing cost is reduced and the convenience of use is improved. At the same time, it is only necessary to adjust the tilt angle between the gear-box body 51 and the ground or the lower wall of the base 14 so that the cleaning member 34 of the present disclosure can be used in all kinds of ground with different sloping surfaces, thereby greatly improving the use range and further facilitating the user.

In the present embodiment of the disclosure, the gear-box body 51 is mounted on the lower wall of the base 14 via screws. When it needs to adjust the tilt angle, the tilt angle can be adjusted only by adjusting degree of tightness of the screw, thereby it is more convenient to use. There are four screws for fastening the gear-box body 51 with the low wall of the base 14.

Referring to FIGS. 4-8, the connecting member 32 includes a connecting body 322 and a first installing body 324 protruding towards the cleaning member 34 from a middle of the connecting body 322. The water storage room 35 includes a water storage body 352 caught on the connecting body 322 for connecting the connecting member 32 with the water storage room 35, and a second installing body 354 received in the first installing body 324. Furthermore, the first installing body 324 includes a first inserting portion 325 and a first receiving portion 327 received in a middle of the first installing body 324 and surrounded by the first inserting portion 327. The second installing body 354 includes a second receiving portion 353 and a second inserting portion 351 positioned on a middle of the second installing body 354 and surrounded by the second receiving portion 353. The first inserting portion 325 is inserted into the second receiving portion 353 and the second receiving portion 353 is received in the first receiving portion 327. That is to say, the connecting member 32 of the present disclosure is movably connected to the cleaning member 34. When the cleaning member 34 is damaged, it is only needed to replace the cleaning member 34, but not needed to replace a whole device, thereby the cost of usage is saved.

In the present embodiment of the disclosure, a cross-section of both the first installing body 324 and the second installing body 354 is hexagonal.

In other embodiments of the disclosure, the first installing body 324 and the second installing body 354 may also be of other shapes, such as circular, parallelogram and pentagonal. As long as the cross-section of the first installing body 324 is consistent with that of the second installing body 354, the first installing body 324 can receive the second installing body 354 therein, or the second installing body 354 can receive the first installing body 324 therein.

Furthermore, the connecting body 322 includes a plurality of connecting portions 323. Each connecting portion 323 includes a barb 321 formed at the end thereof for inserting into a receiving groove 350 formed on outer periphery of the water storage body 352 to catch on an inner wall of the receiving groove 350 for preventing the connecting body 322 from disconnecting from the water storage body 352. That is to say, the present disclosure can connect the connecting member 32 and the water storage room 35 by various ways so that the connection between the connecting member 32 and the water storage room 35 is firm and reliable.

In the present embodiment of the disclosure, there are three connecting portions 323 uniformly positioned on the outer circumference of the connecting body 322.

In the present embodiment of the disclosure, the water storage body 352 includes an inlet opening 359 for adding water into the water storage room 35.

Referring to FIGS. 2-9, the cleaning portion 37 includes a cleaning body 376, a receiving room 374 positioned on a middle portion of the cleaning body 376 for receiving the water storage body 352 therein to form a water storage tank 355 therebetween, and a cleaning cloth 372 positioned on a bottom of the cleaning body 376. The receiving room 374 includes a receiving recess 377 formed at a first bottom wall 371 thereof so that a bottom 3520 of the outer periphery of the water storage body 377 is inserted into the receiving recess 377 and tightly fixed with a second bottom wall 3770 of the receiving recess 377 to tightly connect the water storage room 35 with the cleaning portion 37.

In the present embodiment of the disclosure, the cleaning portion 37 and the water storage room 35 are connected to each other by an ultrasonic connection, namely the cleaning portion 37 and the water storage room 35 are tightly fixed with each other.

The first bottom wall 371 of the receiving room 374 includes an outlet opening 370 for receiving at least one water seepage portion 36 of the cleaning member 34, and water in the water storage tank 355 can penetrate the cleaning cloth 372 through the water seepage portion 36 so that the cleaning cloth 372 can clean the ground.

In the present embodiment of the disclosure, the cleaning cloth 372 is mounted on the cleaning body 376 through a magic stick.

Because water in the water storage tank 355 is penetrated the cleaning cloth 372 by the water seepage portion 36, thereby the cleaning cloth 372 can't be too wet. In this way, during the cleaning process, the ground can't be too wet, at the same time, water marks or grease marks on the ground can be cleaned.

Referring to FIG. 6 and FIG. 7, the first bottom wall 371 of the receiving room 374 further includes at least one retaining wall 378 formed on a sidewall 3772 of the receiving recess 377 for preventing the water seepage portion 36 from blocking the outer periphery 3520 of the water storage body 352 to tightly fix with the receiving recess 377.

Referring to FIG. 1, FIG. 2, FIG. 9 and FIG. 10, the cleaning robot 100 further includes an inducting device 70 electrically connected to the driver 50. The inducting device 70 includes a plurality of first inducting members 72 which are mounted on the upper surface 142 of the base 14 for sensing a movement of the lateral plate 16 to change a movement direction of the cleaning robot 100.

Furthermore, each lateral plate 16 includes a plurality of cutting elements 162 for inserting into a corresponding separating slot 722 of the first inducting member 72 to cut off infrared. The first inducting member 72 can sense a cutting signal and transmit the cutting signal to the driver 50 so that the driver 50 drives the cleaning robot 100 change its movement direction according to the cutting signal.

In the present embodiment of the disclosure, a cross-section of each lateral plate 16 is S-shaped and the lateral plate 16 includes a groove 169 formed at a middle portion thereof and a pair of heads 168 formed at two opposite ends thereof so that the cutting element 162 is positioned on the head 168, thereby the head 168 can be easily touched during usage of the cleaning robot 100. In this way, once the head 168 is touched, the infrared of the first inducting member 72 is cut off by the cutting element 162 and then the driver 50 will drive the cleaning robot 100 turn around according to signals transmitted by the first inducting member 72. That is to say, the cross-section of the lateral plate 16 is S-shaped so that the cleaning robot 100 of the present disclosure is more sensitive and easier to change its direction, which is unlikely to happen in case of a dead machine or a card machine.

In the present embodiment of the disclosure, the cutting element 162 is black in order to more easily cut off the infrared.

In the present embodiment of the disclosure, there are four cutting elements 162 and four first inducting members 72. The cutting element 162 corresponds to the first inducting member 72 formed at a distal end of the lateral plate 16. In this way, as long as the housing 10 encounters an obstacle, a corresponding first inducting member 72 can transmit a signal to the driver 50 for driving the cleaning robot 100 turn around.

In the present embodiment of the disclosure, the first inducting member 72 is a photoelectric switch.

Since there are four first inducting members 72, the housing 10 can slightly displace when the cleaning robot 100 encounters an obstacle during movement. In this condition, a corresponding inducting member 72 sends a signal to the PCB 54 for controlling the motor 53 of the gear-box member 52 to be reversed, thereby the cleaning robot 100 is turned around.

Furthermore, the first inducting member 72 includes an emitting diode 721 and a reception diode 723, and the separating slot 722 is positioned between the emitting diode 721 and the reception diode 723.

The inducting device 70 further includes a plurality of second inducting members 74 mounted on the bottom surface 144 of the base 14 for sensing whether there is a step on the ground and transmitting a sensing signal to the driver 50 for driving the cleaning robot 100 change its movement direction when there is a step on the ground so as to prevent the cleaning robot 100 from falling down.

If there is a step on the ground, the second inducting member 74 sends a signal to the driver 50 and then the driver 50 drives the cleaning device 30 to move for changing a movement direction of the cleaning robot 100 so as to prevent the cleaning robot 100 from falling down.

In the present embodiment of the disclosure, the second inducting member 74 is an infrared sensor and mounted around the bottom surface 144 of the base 14. An infrared direction of the infrared sensor is pointed to the ground for sensing whether the cleaning robot 100 is suspended. The second inducting member 74 sends a suspended signal to the PCB 54 when the cleaning robot 100 is suspended, and then the PCB 54 controls the motor 53 to be reversed according to the suspended signal, thereby the cleaning robot 100 can avoid the steps or other ground structures with a drop.

Furthermore, the cleaning robot 100 further includes a switch 80 positioned on the cover 12 and a remote control (not shown). The switch 80 is used for controlling the cleaning robot 100 to be opened or closed, while the remote control is used for controlling to open or turn off the cleaning robot 100.

Furthermore, the cleaning robot 100 has a variety of walking paths, such as Z route, Y route, M route, O line, wavy line, back-shaped line, one or two combination or two or more combinations.

Referring to FIGS. 1-10, during using of the cleaning robot 100, the lateral plate 16 is moved or the housing 10 has a small displacement after the lateral plate 16 is touched. At this time, the lateral plate 16 is inserted into the separating slot 722 of the first inducting member 72 to cut off the infrared, the first inducting member 72 sends a signal to the PCB 54 and then the PCB 54 sends an instruction to one of the gear-box member 52 connected to the PCB 54 to reverse the motor 53 according to the signal, thereby the cleaning portion 37 is reversed by the PCB 54 so as to form a movement direction of the cleaning robot 100.

When there is a step on the ground, that is, when a part of the base 14 of the cleaning robot 100 is suspended, a corresponding second inducting member 74 sends a suspended signal to the PCB 54, and then the PCB 54 controls the motor 53 to be reversed according to the suspended signal, thereby the cleaning robot 100 can avoid the steps or other ground structures with a drop.

Although the features and elements of the present disclosure are described as embodiments in particular combinations, each feature or element can be used alone or in other various combinations within the principles of the present disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

What is claimed is:
 1. A cleaning robot comprising: a housing comprising a cover, a base tightly connected to the cover, and a pair of lateral plates movably connected to the cover and the base, respectively; a cleaning device mounted on a bottom surface of the base and formed a tilt angle with ground, the cleaning device comprising at least one connecting member movably connected to the base, and at least one cleaning member connected to the connecting member, the cleaning member comprising a water storage room installed with the connecting member and a cleaning portion mounted on the water storage room; and a driver mounted on an upper surface of the base and tightly fixed with the connecting member for driving the connecting member to rotate so as to the cleaning member follow rotating with the connecting member; and wherein water in the water storage room can be immersed into a bottom of the cleaning portion to make the cleaning portion clean water marks or grease marks on the ground during the cleaning member rotation, and the pair of lateral plates can move relative to the base and transmit a signal to the driver which can drive the cleaning device to move for changing a movement direction of the cleaning robot when the pair of lateral plates is touched.
 2. The cleaning robot as claimed in claim 1, wherein the tilt angle is between 3 degree and 30 degree.
 3. The cleaning robot as claimed in claim 2, wherein the driver comprises a gear-box member tightly fixed with the upper surface of the base, the gear-box member comprising a gear-box body tightly fixed with the cleaning device and formed the tilt angle with the ground to make the cleaning device form the tilt angle with the ground.
 4. The cleaning robot as claimed in claim 1, wherein the connecting member comprises a connecting body and a first installing body protruding towards the cleaning member from a middle of the connecting body, and the water storage room comprises a water storage body caught on the connecting body for connecting the connecting member with the water storage room and a second installing body received in the first installing body.
 5. The cleaning robot as claimed in claim 4, wherein the first installing body comprises a first inserting portion and a first receiving portion received in a middle of the first installing body and surrounded by the first inserting portion, and the second installing body comprises a second receiving portion and a second inserting portion positioned on a middle thereof and surrounded by the second receiving portion, the first inserting portion inserted into the second receiving portion and the second receiving portion received in the first receiving portion.
 6. The cleaning robot as claimed in claim 4, wherein the connecting body comprises a plurality of connecting portions each formed a barb at the end thereof for inserting into a receiving groove formed on outer periphery of the water storage body to catch on an inner wall of the receiving groove for preventing the connecting body from disconnecting from the water storage body.
 7. The cleaning robot as claimed in claim 4, wherein the cleaning portion comprises a cleaning body, a receiving room positioned on a middle portion of the cleaning body for receiving the water storage body therein to form a water storage tank therebetween, and a cleaning cloth positioned on a bottom of the cleaning body.
 8. The cleaning robot as claimed in claim 7, wherein the receiving room comprises a receiving recess formed at a first bottom wall thereof, a bottom of the outer periphery of the water storage body inserted into the receiving recess and tightly fixed with the first bottom wall of the receiving recess to tightly connect the water storage room with the cleaning portion.
 9. The cleaning robot as claimed in claim 8, wherein the first bottom wall of the receiving room comprises an outlet opening for receiving at least one water seepage portion of the cleaning member therein, and water in the water storage tank can penetrate the cleaning cloth through the water seepage portion so that the cleaning cloth can clean the ground.
 10. The cleaning robot as claimed in claim 9, wherein the first bottom wall of the receiving room further comprises at least one retaining wall formed on a sidewall of the receiving recess for preventing the water seepage portion from blocking the outer periphery of the water storage body to tightly fix with the receiving recess.
 11. A cleaning robot comprising: a housing comprising a cover, an oval-shaped base connected to the cover, and a pair of lateral plates movably connected to the cover and the base, respectively, and surrounding around a corresponding long outside of the cover and the base; a driver installed on an upper surface of the base and comprising a gear-box member movably mounted on a short side of the base, the gear-box member comprising a gear-box body fixed with the short side of the base and formed a tilt angle with ground or a lower wall of the base; a cleaning device movably connected to a bottom surface of the base and tightly fixed with the gear-box body, the cleaning device comprising at least one connecting member movably connected to the base, and at least one cleaning member tightly fixed with the connecting member, the cleaning member defining an inclined contacting surface relative to the ground to form the tilt angle with the ground same as that of the gear-box body and the ground, and comprising a water storage room installed with the connecting member and a cleaning portion mounted on the water storage room; and when the cleaning member obliquely rotating, a lowest point formed by the cleaning member and the ground created a high strength friction for driving the connecting member to rotate so as to the cleaning member follow rotating with the connecting member; and wherein water in the water storage room can be immersed into a bottom of the cleaning portion to make the cleaning portion clean water marks or grease marks on the ground during the cleaning member rotation, and the pair of lateral plates can move relative to the base and transmit a signal to the driver which can drive the cleaning device to move for changing a movement direction of the cleaning robot when the pair of lateral plates is touched.
 12. The cleaning robot as claimed in claim 11, wherein the cleaning robot further comprises an inducting device electrically connected to the driver, and the gear-box member comprises a plurality of first inducting members which is mounted on the upper surface of the base for sensing the movement of the lateral plate to change a movement direction of the cleaning robot.
 13. The cleaning robot as claimed in claim 12, wherein each lateral plate comprises a plurality of cutting elements for inserting into a corresponding separating slot of the first inducting member to cut off infrared, the first inducting member can sense a cutting signal and transmit the cutting signal to the driver so that the driver drives the cleaning robot change the movement direction according to the cutting signal.
 14. The cleaning robot as claimed in claim 13, wherein a cross-section of the lateral plate is S-shaped and each lateral plate comprises a groove formed at a middle portion thereof and a pair of heads formed at two opposite ends thereof, the cutting element positioned on the head.
 15. The cleaning robot as claimed in claim 14, wherein the first inducting member comprises an emitting diode and a reception diode, the separating slot positioned between the emitting diode and the reception diode.
 16. The cleaning robot as claimed in claim 15, wherein the inducting device further comprises a plurality of second inducting members mounted on the bottom surface of the base for sensing whether there is a step on the ground and transmitting a sensing signal to the driver for driving the cleaning robot change its movement direction when there is a step on the ground so as to prevent the cleaning robot from falling down. 